Apparatus for forming protected metal sheets.



W. W. R NEY.

APPARATUS FOR FORMING PROTECTED METAL SHEETS.

APPLICATION FILED FEB. 23, I918.

Patented Sept. 3, 1918.

3 SHEETS--SF1EET I.

3 SHEETS-SHEET 2,

Patented Sept. 3, 1918.

A fizvenif W. W. RONEY. APPARATUS FOR FORMING PROTECTED METAL SHEETS.

APPLICATION FILED FEB. 23. 1918.

W. W. HONEY.

APPARATUS FOR FORMING PROTECTED METAL SHEETS. I

APPLICATION FILED FEB- 23. I918.

1 277,75 Patented Sept. 3, 1918.

3 SHEETSSHEET 3.

Z 7zven/tar To all whom it may concern:

ED STATES PAT NT orrioE.

ILLIAM .w. HONEY, or sEwmKLEr, PENNSYLVANIA. AssreNoE To ASBESTOS PROTECTED METAL COMPANY, or PITTSBURGH, PENNSYLVANIA, A oonPoEA- TION OF PENNSYLVANIA.

- Be it known that I, WILLIAlVE a citizen of the United States, and a resident .of Sewickley, in the county of Allegheny. and

State of Pennsylvania, have invented an Improvement in Apparatus for Forming Protected Metal Sheets,' of which the following description, in connection with the accompanying drawings, is a specification, like characters, on the drawings representing like parts.

' This invention relates to apparatus for'the manufacture of protected metal sheets in which protecting layers of fibrous material,

preferably asbestos paper, are adhesively af fixed to the metallic sheets.

The invention has for its object to provide sively affixed to the opposite surfaces of each metallic sheet, and having the side edges of the latter enveloped by folded over portions of one or both of said fibrous layers,

which folded over portions overlap one or both fibrous layers, as will be described.

To this end, the machine is provided with means for coating the metal'sheet with ad-' hesive-material, and with means for applying theseparat fibrous layers to the opposite surfac'es of the coated sheet, so that preferably both fibrous layers project beyond a side edge of the metal sheet to form side flaps, and further with mechanism for folding the side flaps in opposite directions and over. the opposite side edges of the metal sheet and substantially parallel. with the latter.

-The folding 'mechanism has cooperating with it means for guiding the covered metal sheet and for pressing the foldedover flap of one fibrous layer against the other fibrous layer. The folding mechanism also has cooperating With it means for drawing in the folded over flap so as to produce a tight fold over the side edges of the metal sheet.

vThese and other features of the invention willbe pointed out in the claims at the end of this specification.-

Figure 1 represents an elevation of a machine embodying this invention. Fig. 1, a section on line 1*- Flg. 2.

I Specification of Letters Patent.

W. RoNEY,

' 'AIBPARAIUS EoE FORMING PROTECTED METAL, SH ETS.

PatentedSept. 3, 1913.

. Application fil ed February 23, 1918. Serial No. 218,749.

trate one form of machine embodying this invention, 10. is a suitable receptacle containing an adhesive material 12, and through which extend guides or runways 13 for metallic sheets 1114, which are fed in a continuous manner by suitable feed rolls, represented by the ears 15, 16, from asuitable feeding table .1 into the'receptacle 10. The adhesive material 12 may and preferably will be. of a bituminous composition and maintained in a molten condition by suit able heating means, one form of which is shown herein as the gas burner 30 applied to the receptacle 10.

The metallic sheets and preferably spaced a short distance apart,

\,through the guides 13 in thereceptacle 10,-

where they are coated upon all surfaces with the adhesive material 12, and are then conducted to a position Where they are gripped 14: travel in successionv by combining rolls represented by the gears I 18. At this point the fibrous layers 19, 20;

preferably asbestos paper, having been prethreaded up through the combining rolls 18,- and coming from the supply rolls 21, 22, are

applied to the opposite surfaces of the successive metallic sheets as the latter pass between the fibrous layers 19, 20 on their up- .ward traveT, and are affixed thereto by the adhesive coating on the metal sheet. The machine thus far described is substantially that shown and described in U. S. Patent 1,002,303 dated Sept. 5,1911. I

The supply rolls'21, 22, are rendered laterally adjustable. in their bearingsin any suitable manner, as for instance by providing the supporting mandrels 23, 24, with suitable threads, which are adapted toengage similar threads in their bearings 25. 26, so

that rotation of the mandrels 23, 24:, by suitable means as for instance by the cranks 27 28, causes the said mandrels and rolls supported thereby to bemoved laterally.

By means of this lateral adjustment of the supply rolls 21,22, the application of each fibrous layer to the coated metal-sheet may be effected, s0 that'upon each surface of the metal sheet the fibrous layer will extend from a point substantially flush with one side to a point beyond the opposite side of the said metal sheet.

The sheet in this form travels from the combining rolls 18 over the guide rolls 30, 31, and is then drawn preferably in a substantially horizontal position through a folding mechanism to be hereinafter described, by draw rolls 32,' and then passes over the guide rolls 33 and is received upon trucks or other receiving devices.

The exact position of the folding mechanism with respect to the combining rolls 18, may be varied from the position illustrated in Fig. 1 as desired without departing from /the invention, The coating of adhesive material which the metal sheet receives upon passing through the bath 10, is of. such thickness that when the fibrous layers are afiixed thereto bythe combining rolls 18, enough adhesive material is squeezed out by the pressure of the said combining rolls to coat one surface of the projecting side portions or flaps 34, 35, of the fibrous layers 19, 20, see Fig. 4, so that upon subsequent folding of said flaps by the folding mechanism,'the flaps are adhesively secured to. the

body portion ofthe sheet.

The folding mechanism referred to is pref erably made as herein shown and consists of twosets of rolls, spaced apart. and ar-' ranged to coiiperate with the flaps at the opposite sides of the metal sheet. Each set of rolls comprises a plurality of rolls herein shown as four 'in number, which are adjustable to any desired position with respect to the edge of the metal sheet as will be described.

shown of four beveled 0r grooved rolls 40, 41, 42, 43, see Figs. 2 and 3, and the endmost rolls 40, 43, of said sets, are arranged on opposite sides of the path of movement of the metal sheet and have cobperating with them guiding and pressing devices, preferably rolls 44, provided .with'circular pe ripheries. Each of the pressure rolls 44, 45, is loosely mounted upon a shaft 46, see Fig. 4, and each of the folding rolls is loosely mounted upon a shaft 47 which'has bearings in-the forked member 48 of a shaft 49.

The shafts 46, 49, are mounted in su port: ing members or blocks 50, 51, carried by .a su porting frame, which is herein shown as sustantially parallel rods 52, 53,

byblocks 54, mounted on rods 56, 57, ex

tended substantially at right angles to the supported are slidable'on the vertical rods 56, 57, so.

' just the rolls carried by the said horizontal rods toward and from the path of movement of the metal'sheet. The blocks 54, 5.5, may

be secured in their adjusted positions on the vertical rods 56, 57, by set screws 58 or otherw1se. Q

The blocks 50, at are adjustable onth e' horizontal rods 52, 53, in different directions, being capable of movementlengthwise of the rods and-also capable of turning or rotating thereon, and said blocks may be secured in their adjusted vpositions by set screws 59 or otherwise. The shafts 46, 49, are also capableof adjustment in the blocks 50, 51-, being movable lengthwise thereon and also rotatable therein, and they are secured in their adjusted positions in said blocks by'set screws 60 or otherwise.

The vertical rods 56, 57 ,are erected upon suitable bases 61 and provision is made for adjusting the supporting framework at opposite sides of the metal sheet toward and from'each other, which is accomplished as herein shown by means of screw threaded rods 62 extended through the opposing bases 61, each of said rods having nuts 63, see Fig. 4, which engage one side wall 65 of each base and coiiperate with springs 66 encircling said screw threaded rods between the nuts 63 v and the opposite side walls 67 of said bases. The bases 61 are guided in their movement by rods 68 extended through them and supported by suitable blocks or uprights 69,

only one ofwhich isshown in Fig. 4. It

will "thus be seen, that the folding and guiding rolls are capable of adjustment length wise oft-heir supporting frames, and also are rotatably adjustable about the-horizontal rods 52, 53, and further they are axially and lengthwise adjustable in their hearing Each set. of folding rolls consists as herein ing frames arecapable 'of being adjusted toward and from each other by turning the screw rods 62, and are capable of automatic adjustment to compensate for moderate variationsin the widths of the metal sheets by means of the springs 66, which permit the bases to move on the guide rods .68- away from the sides of the metal sheet, the spring being compressed between the side Wall 67 of the base and the nut 63.

In the present instance, the fibrous layers 19, 20, are applied to the coated metal sheet 14 so that the upper layer 19 projects beyond one edge of themetal sheet and the lower layer 20 beyond the opposite edge thereof,

and the folding rolls at the opposite sides of the path of movement of the metal sheet are arranged so that the flap 34 of the upper 1 layer 19 will be turned down and under the roll 40 parallel or substantially parallel 'metal sheet, and the flap of the lower layer 20 will be turned up and over upon the metal sheet, the said flaps being cemented to the fibrous layers 20, 19, respectively, by the .surplus adhesive squeezed out from between the fibrous layers and the metal sheet. The

action of the sets of folding rolls shown in Figs- 1 and 2, is clearly-illustrated in Figs.

'4 to 7. Referring to 5, it will be s'een'v that one bearing surface 70 of the folding with the metal sheet and 'bearsupon the fibrousl layer 19 upon the upper surface thereof, while the other bearing surface 71 of said roll extends at an angle to the sheet and below the same, in which position it engages the flap 34 and turns the latter down, from, which position it is turned into a substantially vertical position by the bear- 1ng surface 71 of the next adjacent roll 41,

"see Fig. 6. As the metal sheet is carried farther forward in the direction of the ar-' row 72 in Fig. 2, the flap 34 is turned partially under the metal sheet by the bearing surface-71 ofthe next roll 42, see Fig. 7,

and is then completely folded under and brought into a position parallel with the metal sheet and in engagement with the fibrous layer 20 by the bearing surface 71 of the roll 43,. see Fig. 4. The flap 35 on the 1 lower layer 20 is folded in the reversedirection and the folding rolls cooperating therewith are revers'ely arranged with respect to the folding rolls cooperating with the flap 34. as represented in Fig. 2.

The final folded position of the flap 3b is .represented in Fig.'4.- It will be understood that the folded flaps are adhesively aflixed to the fibrous layers between them and the metal sheet and are pressed into engagement therewith by the cooperation of the last folding roll with the pressure and guiding roll 44 or 45. After the flaps have passed by. the last set of folding andpi'essure rolls, it is preferred to draw them in and thus produce atight fold over the side edges ofthe metal sheet. This is accomplished as herein shown by biasirolls 80, which are arranged at an anglewith respect to the travel of the sheet as shown in Figs. 2 and 3, and cooperate with bearing rolls 81.v F

The bias and bearing rolls 80, 81, also act as pressure rolls and cooperate to firmlyaffix the flaps to the body portion of the sheet and vsaid rolls may and preferably will be supported by blocks 82, 83, adjustably mounted on the rods 52, 53, of the side frames, so that the bias and bearing rolls 80, 81, may be adjusted laterally with relation to the metal sheet simultaneously with the folding and pressure rolls. It will be observed that by making the folding rolls bodily movable and independently adjustable into difierent angular positions with relation to the path offibrous layers said edges and upon 'movementof the metal sheet, the said rolls may be made of the same form and construcscribed, in combination, a receptacle for containing adhesive material, mean s for conducting a metal sheet through said. receptacle to-coat the same with adhesive material, means for applying separate fibrous layers to opposite surfaces of the coated metal sheet, so that a portion of each fibrous layer extends beyond oneside edge of the metal sheet,.and beyond the edge of I the fibrous layer applied to the opposite surface of said metal sheet, and means for but it is not desired to limit folding the said projecting portions of the fibrous layers in opposite directions over the side edges of the metallic sheet and upon the fibrous layers aifixed to the opposite surfaces of said metal sheet.

2. In an apparatus of the character described, in combination, a receptacle for "containing adhesive material, means for conducting a metal sheet through'said receptacle to coat the same with adhesive material, means'for applying separate fibrous layers to opposite surfaces of the coated metal'sheet, so that a portion of each fibrous layer extends beyond one'side edge of the .metal sheet, and beyond the edge of the fibrous layer applied to the opposite surface. .of said metal sheet, means for folding the said projecting portions of the fibrous layers in opposite directions over the side edges of the metallic sheet'and upon'the fibrous layers affixed to the opposite surfaces of said metal sheet, and means for pressing the folded portions against the opposite surfaces of themetal sheet.

3. In amachine of the character described, means for coating a metal sheet with adhesive materiahmeans for applying separate to theopposite surfaces of the said coated sheet, so that opposite sides of the fibrous layers project beyond the opposite side edges of the coated metal sheet and beyond the edge of the fibrous layer applied to the opposite surface of said metal sheet, and means for foldingsald pro ecting portions in opposite directions around fixed to the opposite surfaces of Said metal sheet.

4. In a machine of the character dethe fibrous layers afscribed, means for coating a metalsheetwith adhesive material, means for applying separate fibrous layers to the opposite surfaces projecting portions in opposite directions.

around said edges and upon the fibrous layer aflixed to the opposite surfaces of said metal sheet, said folding means being adjustable to variations. in the width of the, metal v sheets.

5. In combination, means for coating a metal sheet with adhesive material, means for applying separatelayers of fibrous maj path of ovement'of the metal sheet to pro terial to the opposite surfaces of said coated sheet with one of the saidlayers projecting beyond one side of said metal sheet and beyond the edge of the fibrous layerapplied to 'theopposite" surface of said metal" sheet,

and means for folding the projecting-pop tion of a layer afiixed'to one surface'of the metal sheet over. the edge thereof andupon the fibrous layer aflixed tothe opposite surface of said metal sheet.

6. In. combination, means for coating a metal sheet with-adhesive materiahgmeans for applying separate layers of fibrous material to the-opposite surfaces of said coated metal sheet with one of said layers projecting beyond one edge of the coated metal sheet, means for guiding said covered metal sheet, and a plurality of folding .devices spaced apart and bodily movable into different angular positions with relation to the gressive y fold the pro'ecting portion of one fibrous layer around the edge of the metal sheet and over upon the other fibrous layer,

thereon.

7. In combination, means for :appl ing separate fibrous layers to opposite sur aces of a metal sheet coated with adhesive material so that fibrous flaps project beyond the opposite side edges of saidmetal sheet, guiding devices located on the op osite sides of the path of movement of sad metal sheet .and cooperating with the opposite surfaces of the latter, folding. devices cooperati with said guiding devices and arrangedwithrelation to othe path of movement of the metal sheet to oppose said guiding devices, H

and intermediate folding devices arranged at different angles with relation to the path of-inovementof the metal sheet and coiiperating with the edge of the latter.-

8. In combination, means for appl ing separate fibrous layers to oppositesur aces of a metal sheet co ted'with adhesive material so that fibrous aps project beyond the opposite side edges of said metal sheet, guiding devices for the metal sheet cooperating with the opposite surfaces thereof, folding devicescooperating with the edges of the sheet to fold said flaps over the same, andbias. rolls cooperating with the folded-over flaps. 9. In a machine of the character described,-

mechanism for folding the projecting portion of a fibrous layer around a side edge of' .a metal sheet to which it is adhesively af-' fixed, comprising a plurality of rolls bodily movable to adjust them to different stages of the' folding operation.

10. In a machine of the character de-.-

scribed, mechanism for folding opposite projecting portions of fibrous layers over the side edges of a metal sheet to which they are adhesively applied, comprising substantially parallel sets offoldin rolls, adjustable to variations in width 0 the metallic sheets,

and means for simultaneously effecting the 86 adjustment of the rolls located on opposite sides of said metal sheet. j r

11 In combination, means for applying separate fibrous layers to opposite surfaces of a metal sheet coated with adhesive mate- 90 rial so that fibrous flaps projectbeyond the, opposite side edges of said metal sheet, guiding devices for the metal sheet cooperating with the opposite surfaces thereof, folding devices cooperating with the edges of the sheet to fold said flaps over the same, and

. means cooperating with the foldedover flaps to draw th in in from. the side edges of the metal shes? and effect a tight fold over the said side edges. 1

12. In a machine of the character 7 described, mechanism for folding theproject ing portion of a fibrous layerarou'nd aside edge of a metal sheet to which it is adhesively vices bodily movablein the arcs of circles to adjust them to different stages of the folding operation and means for securing said devices in different fixed positions in the arcs I in -which they are moved. v

-In testimony whereof I have signed my {name to this vspecification.

; WIIJLIAM w. KOIQ'EY.

aflixed, comprising a plurality of de- 

